/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.4 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem10_label08.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 13:33:46,873 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 13:33:46,881 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 13:33:46,911 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 13:33:46,911 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 13:33:46,912 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 13:33:46,914 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 13:33:46,916 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 13:33:46,917 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 13:33:46,918 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 13:33:46,919 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 13:33:46,921 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 13:33:46,921 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 13:33:46,922 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 13:33:46,923 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 13:33:46,924 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 13:33:46,925 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 13:33:46,927 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 13:33:46,929 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 13:33:46,931 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 13:33:46,933 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 13:33:46,934 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 13:33:46,935 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 13:33:46,936 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 13:33:46,939 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 13:33:46,939 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 13:33:46,940 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 13:33:46,941 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 13:33:46,941 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 13:33:46,942 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 13:33:46,942 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 13:33:46,943 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 13:33:46,946 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 13:33:46,947 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 13:33:46,949 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 13:33:46,952 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 13:33:46,953 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 13:33:46,953 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 13:33:46,953 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 13:33:46,954 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 13:33:46,955 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 13:33:46,956 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-25 13:33:46,982 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 13:33:46,982 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 13:33:46,984 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 13:33:46,984 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 13:33:46,984 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 13:33:46,985 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 13:33:46,985 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 13:33:46,985 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 13:33:46,985 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 13:33:46,985 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 13:33:46,985 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 13:33:46,986 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 13:33:46,986 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 13:33:46,986 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 13:33:46,986 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 13:33:46,986 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 13:33:46,987 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 13:33:46,987 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 13:33:46,987 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 13:33:46,987 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 13:33:46,987 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 13:33:46,988 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 13:33:46,988 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 13:33:46,988 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 13:33:46,988 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 13:33:46,988 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 13:33:46,989 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 13:33:46,989 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 13:33:46,989 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 13:33:46,989 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4;log-additional-information=true; [2020-09-25 13:33:47,486 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 13:33:47,511 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 13:33:47,515 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 13:33:47,516 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 13:33:47,517 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 13:33:47,518 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem10_label08.c [2020-09-25 13:33:47,609 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ec73741a7/eb58faa3f6e34b79a481ee2fb99ea274/FLAG4a0c173e5 [2020-09-25 13:33:48,285 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 13:33:48,286 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem10_label08.c [2020-09-25 13:33:48,304 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ec73741a7/eb58faa3f6e34b79a481ee2fb99ea274/FLAG4a0c173e5 [2020-09-25 13:33:48,488 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ec73741a7/eb58faa3f6e34b79a481ee2fb99ea274 [2020-09-25 13:33:48,503 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 13:33:48,509 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 13:33:48,512 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 13:33:48,512 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 13:33:48,516 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 13:33:48,517 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 01:33:48" (1/1) ... [2020-09-25 13:33:48,522 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7f58caab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:33:48, skipping insertion in model container [2020-09-25 13:33:48,523 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 01:33:48" (1/1) ... [2020-09-25 13:33:48,536 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 13:33:48,604 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 13:33:49,140 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 13:33:49,146 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 13:33:49,295 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 13:33:49,315 INFO L208 MainTranslator]: Completed translation [2020-09-25 13:33:49,315 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:33:49 WrapperNode [2020-09-25 13:33:49,316 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 13:33:49,317 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 13:33:49,317 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 13:33:49,317 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 13:33:49,335 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:33:49" (1/1) ... [2020-09-25 13:33:49,336 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:33:49" (1/1) ... [2020-09-25 13:33:49,355 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:33:49" (1/1) ... [2020-09-25 13:33:49,355 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:33:49" (1/1) ... [2020-09-25 13:33:49,393 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:33:49" (1/1) ... [2020-09-25 13:33:49,414 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:33:49" (1/1) ... [2020-09-25 13:33:49,424 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:33:49" (1/1) ... [2020-09-25 13:33:49,446 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 13:33:49,447 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 13:33:49,447 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 13:33:49,447 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 13:33:49,449 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:33:49" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 13:33:49,536 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 13:33:49,536 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 13:33:49,536 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 13:33:49,536 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 13:33:49,536 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 13:33:49,537 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 13:33:49,538 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 13:33:49,539 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 13:33:49,539 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 13:33:49,539 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 13:33:49,540 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 13:33:51,013 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 13:33:51,013 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 13:33:51,025 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 01:33:51 BoogieIcfgContainer [2020-09-25 13:33:51,025 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 13:33:51,027 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 13:33:51,027 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 13:33:51,032 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 13:33:51,033 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 01:33:48" (1/3) ... [2020-09-25 13:33:51,034 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@218dff6b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 01:33:51, skipping insertion in model container [2020-09-25 13:33:51,035 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:33:49" (2/3) ... [2020-09-25 13:33:51,035 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@218dff6b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 01:33:51, skipping insertion in model container [2020-09-25 13:33:51,035 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 01:33:51" (3/3) ... [2020-09-25 13:33:51,041 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem10_label08.c [2020-09-25 13:33:51,052 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 13:33:51,063 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 13:33:51,085 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 13:33:51,117 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 13:33:51,117 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 13:33:51,118 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 13:33:51,118 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 13:33:51,118 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 13:33:51,118 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 13:33:51,118 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 13:33:51,118 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 13:33:51,147 INFO L276 IsEmpty]: Start isEmpty. Operand 456 states. [2020-09-25 13:33:51,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-09-25 13:33:51,158 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:33:51,160 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 13:33:51,160 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:33:51,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:33:51,168 INFO L82 PathProgramCache]: Analyzing trace with hash -938747945, now seen corresponding path program 1 times [2020-09-25 13:33:51,179 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:33:51,180 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [302305946] [2020-09-25 13:33:51,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:33:51,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:33:51,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:51,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:52,288 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:33:52,289 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-09-25 13:33:52,289 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 13:33:52,289 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 922 [2020-09-25 13:33:52,293 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:33:52,294 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:33:52,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 13:33:52,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 13:33:52,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 55 [2020-09-25 13:33:52,295 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 13:33:52,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:33:52,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:33:52,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:52,466 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:33:52,466 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 13:33:52,467 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:33:52,467 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-09-25 13:33:52,467 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:33:52,467 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:33:52,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:33:52,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:33:52,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 13:33:52,468 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:33:52,498 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 13:33:52,500 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [302305946] [2020-09-25 13:33:52,503 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 13:33:52,503 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 13:33:52,504 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [670415353] [2020-09-25 13:33:52,512 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 13:33:52,512 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:33:52,529 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 13:33:52,531 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 13:33:52,534 INFO L87 Difference]: Start difference. First operand 456 states. Second operand 5 states. [2020-09-25 13:33:55,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:33:55,225 INFO L93 Difference]: Finished difference Result 1226 states and 1797 transitions. [2020-09-25 13:33:55,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 13:33:55,228 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 59 [2020-09-25 13:33:55,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:33:55,254 INFO L225 Difference]: With dead ends: 1226 [2020-09-25 13:33:55,255 INFO L226 Difference]: Without dead ends: 707 [2020-09-25 13:33:55,267 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-09-25 13:33:55,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 707 states. [2020-09-25 13:33:55,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 707 to 695. [2020-09-25 13:33:55,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 695 states. [2020-09-25 13:33:55,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 695 states to 695 states and 926 transitions. [2020-09-25 13:33:55,376 INFO L78 Accepts]: Start accepts. Automaton has 695 states and 926 transitions. Word has length 59 [2020-09-25 13:33:55,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:33:55,377 INFO L479 AbstractCegarLoop]: Abstraction has 695 states and 926 transitions. [2020-09-25 13:33:55,377 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 13:33:55,377 INFO L276 IsEmpty]: Start isEmpty. Operand 695 states and 926 transitions. [2020-09-25 13:33:55,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2020-09-25 13:33:55,391 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:33:55,392 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 13:33:55,392 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 13:33:55,392 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:33:55,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:33:55,393 INFO L82 PathProgramCache]: Analyzing trace with hash -899949441, now seen corresponding path program 1 times [2020-09-25 13:33:55,393 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:33:55,394 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1251928533] [2020-09-25 13:33:55,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:33:55,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:33:55,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:55,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:55,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:56,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:56,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:00,493 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:34:00,494 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 199 [2020-09-25 13:34:00,494 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 13:34:00,495 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5025 [2020-09-25 13:34:00,495 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:34:00,496 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:34:00,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 13:34:00,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-25 13:34:00,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 131 [2020-09-25 13:34:00,497 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:34:00,597 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:34:00,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:34:00,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:00,623 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:34:00,623 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 13:34:00,624 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:34:00,624 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-25 13:34:00,624 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:34:00,625 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:34:00,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:34:00,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:34:00,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 13:34:00,626 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:34:00,647 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 13:34:00,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:34:00,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:00,960 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:34:00,961 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 125 [2020-09-25 13:34:00,961 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:34:00,970 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 278 [2020-09-25 13:34:00,970 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:34:00,971 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:34:00,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 13:34:00,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 13:34:00,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-09-25 13:34:00,972 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:34:01,173 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 43 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 13:34:01,173 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1251928533] [2020-09-25 13:34:01,174 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 13:34:01,174 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 13:34:01,175 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1308489735] [2020-09-25 13:34:01,177 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 13:34:01,178 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:34:01,178 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 13:34:01,178 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 13:34:01,179 INFO L87 Difference]: Start difference. First operand 695 states and 926 transitions. Second operand 7 states. [2020-09-25 13:34:03,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:34:03,351 INFO L93 Difference]: Finished difference Result 1905 states and 2663 transitions. [2020-09-25 13:34:03,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 13:34:03,352 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 188 [2020-09-25 13:34:03,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:34:03,364 INFO L225 Difference]: With dead ends: 1905 [2020-09-25 13:34:03,364 INFO L226 Difference]: Without dead ends: 1225 [2020-09-25 13:34:03,369 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-09-25 13:34:03,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1225 states. [2020-09-25 13:34:03,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1225 to 857. [2020-09-25 13:34:03,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 857 states. [2020-09-25 13:34:03,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 857 states to 857 states and 1119 transitions. [2020-09-25 13:34:03,454 INFO L78 Accepts]: Start accepts. Automaton has 857 states and 1119 transitions. Word has length 188 [2020-09-25 13:34:03,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:34:03,459 INFO L479 AbstractCegarLoop]: Abstraction has 857 states and 1119 transitions. [2020-09-25 13:34:03,459 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 13:34:03,460 INFO L276 IsEmpty]: Start isEmpty. Operand 857 states and 1119 transitions. [2020-09-25 13:34:03,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 268 [2020-09-25 13:34:03,488 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:34:03,488 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 13:34:03,489 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 13:34:03,490 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:34:03,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:34:03,492 INFO L82 PathProgramCache]: Analyzing trace with hash -779241874, now seen corresponding path program 1 times [2020-09-25 13:34:03,493 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:34:03,493 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [214431026] [2020-09-25 13:34:03,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:34:03,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:34:03,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:03,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:04,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:04,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:08,633 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:34:08,633 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 280 [2020-09-25 13:34:08,634 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 13:34:08,634 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5052 [2020-09-25 13:34:08,635 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:34:08,635 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:34:08,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 13:34:08,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 94 [2020-09-25 13:34:08,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 157 [2020-09-25 13:34:08,636 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:34:08,809 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:34:08,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:34:08,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:08,824 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:34:08,824 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 13:34:08,826 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:34:08,826 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 13:34:08,826 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:34:08,827 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:34:08,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:34:08,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:34:08,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:34:08,828 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:34:08,841 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 13:34:08,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:34:08,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:08,954 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:34:08,954 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-25 13:34:08,954 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:34:08,954 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 96 [2020-09-25 13:34:08,955 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:34:08,955 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:34:08,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:34:08,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:34:08,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-09-25 13:34:08,956 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:34:08,980 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-25 13:34:09,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:34:09,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:09,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:09,496 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:34:09,497 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 125 [2020-09-25 13:34:09,497 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 13:34:09,497 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 485 [2020-09-25 13:34:09,497 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:34:09,497 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:34:09,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 13:34:09,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:34:09,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 117 [2020-09-25 13:34:09,498 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:34:09,691 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 96 proven. 2 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2020-09-25 13:34:09,692 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [214431026] [2020-09-25 13:34:09,692 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:34:09,692 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 13:34:09,693 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [953905415] [2020-09-25 13:34:09,695 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 13:34:09,695 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:34:09,696 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 13:34:09,696 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-09-25 13:34:09,697 INFO L87 Difference]: Start difference. First operand 857 states and 1119 transitions. Second operand 8 states. [2020-09-25 13:34:13,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:34:13,300 INFO L93 Difference]: Finished difference Result 2522 states and 3393 transitions. [2020-09-25 13:34:13,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 13:34:13,305 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 267 [2020-09-25 13:34:13,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:34:13,320 INFO L225 Difference]: With dead ends: 2522 [2020-09-25 13:34:13,320 INFO L226 Difference]: Without dead ends: 1656 [2020-09-25 13:34:13,325 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=52, Invalid=80, Unknown=0, NotChecked=0, Total=132 [2020-09-25 13:34:13,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1656 states. [2020-09-25 13:34:13,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1656 to 1318. [2020-09-25 13:34:13,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1318 states. [2020-09-25 13:34:13,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1318 states to 1318 states and 1659 transitions. [2020-09-25 13:34:13,383 INFO L78 Accepts]: Start accepts. Automaton has 1318 states and 1659 transitions. Word has length 267 [2020-09-25 13:34:13,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:34:13,384 INFO L479 AbstractCegarLoop]: Abstraction has 1318 states and 1659 transitions. [2020-09-25 13:34:13,385 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 13:34:13,385 INFO L276 IsEmpty]: Start isEmpty. Operand 1318 states and 1659 transitions. [2020-09-25 13:34:13,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 274 [2020-09-25 13:34:13,393 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:34:13,393 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 13:34:13,393 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 13:34:13,394 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:34:13,394 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:34:13,394 INFO L82 PathProgramCache]: Analyzing trace with hash 266332152, now seen corresponding path program 1 times [2020-09-25 13:34:13,394 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:34:13,395 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1330702528] [2020-09-25 13:34:13,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:34:13,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:34:13,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:13,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:13,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:14,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:14,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:18,455 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:34:18,456 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 286 [2020-09-25 13:34:18,456 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 13:34:18,456 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-09-25 13:34:18,457 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:34:18,457 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:34:18,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 13:34:18,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 96 [2020-09-25 13:34:18,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 135 [2020-09-25 13:34:18,458 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:34:18,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:34:18,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:34:18,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:18,541 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:34:18,542 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 13:34:18,542 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:34:18,542 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 13:34:18,543 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:34:18,543 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:34:18,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:34:18,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:34:18,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:34:18,544 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:34:18,560 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 13:34:18,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:34:18,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:18,651 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:34:18,652 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-25 13:34:18,652 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:34:18,652 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 79 [2020-09-25 13:34:18,653 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:34:18,653 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:34:18,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:34:18,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:34:18,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-09-25 13:34:18,655 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:34:18,683 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-25 13:34:18,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:34:18,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:19,013 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:34:19,013 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 131 [2020-09-25 13:34:19,014 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:34:19,014 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 294 [2020-09-25 13:34:19,014 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:34:19,015 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:34:19,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 13:34:19,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 13:34:19,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 130 [2020-09-25 13:34:19,016 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:34:19,346 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 159 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 13:34:19,346 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1330702528] [2020-09-25 13:34:19,346 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:34:19,347 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 13:34:19,347 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [813577195] [2020-09-25 13:34:19,348 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 13:34:19,348 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:34:19,348 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 13:34:19,349 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 13:34:19,349 INFO L87 Difference]: Start difference. First operand 1318 states and 1659 transitions. Second operand 7 states. [2020-09-25 13:34:21,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:34:21,770 INFO L93 Difference]: Finished difference Result 3151 states and 4137 transitions. [2020-09-25 13:34:21,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 13:34:21,773 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 273 [2020-09-25 13:34:21,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:34:21,786 INFO L225 Difference]: With dead ends: 3151 [2020-09-25 13:34:21,787 INFO L226 Difference]: Without dead ends: 1848 [2020-09-25 13:34:21,792 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-09-25 13:34:21,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1848 states. [2020-09-25 13:34:21,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1848 to 1646. [2020-09-25 13:34:21,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1646 states. [2020-09-25 13:34:21,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1646 states to 1646 states and 2040 transitions. [2020-09-25 13:34:21,861 INFO L78 Accepts]: Start accepts. Automaton has 1646 states and 2040 transitions. Word has length 273 [2020-09-25 13:34:21,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:34:21,862 INFO L479 AbstractCegarLoop]: Abstraction has 1646 states and 2040 transitions. [2020-09-25 13:34:21,862 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 13:34:21,862 INFO L276 IsEmpty]: Start isEmpty. Operand 1646 states and 2040 transitions. [2020-09-25 13:34:21,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 284 [2020-09-25 13:34:21,870 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:34:21,870 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 13:34:21,870 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 13:34:21,870 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:34:21,871 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:34:21,871 INFO L82 PathProgramCache]: Analyzing trace with hash 463482390, now seen corresponding path program 1 times [2020-09-25 13:34:21,871 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:34:21,871 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [155123003] [2020-09-25 13:34:21,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:34:21,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:34:21,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:22,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:22,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:22,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:22,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:24,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:26,965 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:34:26,966 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 296 [2020-09-25 13:34:26,966 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 13:34:26,967 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5030 [2020-09-25 13:34:26,968 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:34:26,972 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:34:26,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 13:34:26,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 106 [2020-09-25 13:34:26,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 135 [2020-09-25 13:34:26,973 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-09-25 13:34:27,075 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:34:27,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:34:27,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:27,085 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:34:27,085 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 13:34:27,085 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:34:27,086 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 13:34:27,086 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:34:27,087 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:34:27,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:34:27,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:34:27,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:34:27,088 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:34:27,109 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 13:34:27,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:34:27,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:27,226 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:34:27,226 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 13:34:27,227 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:34:27,227 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 98 [2020-09-25 13:34:27,227 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:34:27,228 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:34:27,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:34:27,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:34:27,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-09-25 13:34:27,229 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:34:27,262 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2020-09-25 13:34:27,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:34:27,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:27,561 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:34:27,562 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 131 [2020-09-25 13:34:27,562 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:34:27,562 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 264 [2020-09-25 13:34:27,563 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:34:27,563 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:34:27,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 13:34:27,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 13:34:27,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 130 [2020-09-25 13:34:27,564 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:34:27,740 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 168 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 13:34:27,740 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [155123003] [2020-09-25 13:34:27,740 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:34:27,741 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 13:34:27,741 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1382376210] [2020-09-25 13:34:27,742 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 13:34:27,742 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:34:27,742 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 13:34:27,743 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 13:34:27,743 INFO L87 Difference]: Start difference. First operand 1646 states and 2040 transitions. Second operand 7 states. [2020-09-25 13:34:30,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:34:30,353 INFO L93 Difference]: Finished difference Result 4037 states and 5509 transitions. [2020-09-25 13:34:30,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 13:34:30,354 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 283 [2020-09-25 13:34:30,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:34:30,370 INFO L225 Difference]: With dead ends: 4037 [2020-09-25 13:34:30,371 INFO L226 Difference]: Without dead ends: 1872 [2020-09-25 13:34:30,380 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2020-09-25 13:34:30,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1872 states. [2020-09-25 13:34:30,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1872 to 1606. [2020-09-25 13:34:30,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1606 states. [2020-09-25 13:34:30,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1606 states to 1606 states and 1960 transitions. [2020-09-25 13:34:30,454 INFO L78 Accepts]: Start accepts. Automaton has 1606 states and 1960 transitions. Word has length 283 [2020-09-25 13:34:30,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:34:30,455 INFO L479 AbstractCegarLoop]: Abstraction has 1606 states and 1960 transitions. [2020-09-25 13:34:30,455 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 13:34:30,455 INFO L276 IsEmpty]: Start isEmpty. Operand 1606 states and 1960 transitions. [2020-09-25 13:34:30,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 291 [2020-09-25 13:34:30,463 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:34:30,463 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 13:34:30,463 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 13:34:30,463 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:34:30,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:34:30,464 INFO L82 PathProgramCache]: Analyzing trace with hash -858003449, now seen corresponding path program 1 times [2020-09-25 13:34:30,464 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:34:30,464 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1768119826] [2020-09-25 13:34:30,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:34:30,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:34:30,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:30,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:30,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:30,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:31,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:32,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking...